src/modules/m_spanningtree/main.cpp

   1 /*
   2  * InspIRCd -- Internet Relay Chat Daemon
   3  *
   4  *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
   5  *   Copyright (C) 2007-2009 Craig Edwards <craigedwards@brainbox.cc>
   6  *   Copyright (C) 2007-2008 Robin Burchell <robin+git@viroteck.net>
   7  *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
   8  *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
   9  *
  10  * This file is part of InspIRCd.  InspIRCd is free software: you can
  11  * redistribute it and/or modify it under the terms of the GNU General Public
  12  * License as published by the Free Software Foundation, version 2.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  16  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23
  24 #include "inspircd.h"
  25 #include "socket.h"
  26 #include "xline.h"
  27 #include "iohook.h"
  28
  29 #include "resolvers.h"
  30 #include "main.h"
  31 #include "utils.h"
  32 #include "treeserver.h"
  33 #include "link.h"
  34 #include "treesocket.h"
  35 #include "commands.h"
  36 #include "protocolinterface.h"
  37
  38 ModuleSpanningTree::ModuleSpanningTree()
  39         : rconnect(this), rsquit(this), map(this)
  40         , commands(NULL), DNS(this, "DNS")
  41 {
  42 }
  43
  44 SpanningTreeCommands::SpanningTreeCommands(ModuleSpanningTree* module)
  45         : svsjoin(module), svspart(module), svsnick(module), metadata(module),
  46         uid(module), opertype(module), fjoin(module), ijoin(module), resync(module),
  47         fmode(module), ftopic(module), fhost(module), fident(module), fname(module),
  48         away(module), addline(module), delline(module), encap(module), idle(module),
  49         nick(module), ping(module), pong(module), push(module), save(module),
  50         server(module), squit(module), snonotice(module), version(module),
  51         burst(module), endburst(module)
  52 {
  53 }
  54
  55 namespace
  56 {
  57         void SetLocalUsersServer(Server* newserver)
  58         {
  59                 ServerInstance->FakeClient->server = newserver;
  60                 const LocalUserList& list = ServerInstance->Users->local_users;
  61                 for (LocalUserList::const_iterator i = list.begin(); i != list.end(); ++i)
  62                         (*i)->server = newserver;
  63         }
  64
  65         void ResetMembershipIds()
  66         {
  67                 // Set all membership ids to 0
  68                 const LocalUserList& list = ServerInstance->Users->local_users;
  69                 for (LocalUserList::iterator i = list.begin(); i != list.end(); ++i)
  70                 {
  71                         LocalUser* user = *i;
  72                         for (UCListIter j = user->chans.begin(); j != user->chans.end(); ++j)
  73                                 (*j)->id = 0;
  74                 }
  75         }
  76 }
  77
  78 void ModuleSpanningTree::init()
  79 {
  80         ServerInstance->SNO->EnableSnomask('l', "LINK");
  81
  82         ResetMembershipIds();
  83
  84         Utils = new SpanningTreeUtilities(this);
  85         Utils->TreeRoot = new TreeServer;
  86         commands = new SpanningTreeCommands(this);
  87
  88         delete ServerInstance->PI;
  89         ServerInstance->PI = new SpanningTreeProtocolInterface;
  90
  91         delete ServerInstance->FakeClient->server;
  92         SetLocalUsersServer(Utils->TreeRoot);
  93
  94         loopCall = false;
  95         SplitInProgress = false;
  96
  97         // update our local user count
  98         Utils->TreeRoot->UserCount = ServerInstance->Users->local_users.size();
  99 }
 100
 101 void ModuleSpanningTree::ShowLinks(TreeServer* Current, User* user, int hops)
 102 {
 103         std::string Parent = Utils->TreeRoot->GetName();
 104         if (Current->GetParent())
 105         {
 106                 Parent = Current->GetParent()->GetName();
 107         }
 108
 109         const TreeServer::ChildServers& children = Current->GetChildren();
 110         for (TreeServer::ChildServers::const_iterator i = children.begin(); i != children.end(); ++i)
 111         {
 112                 TreeServer* server = *i;
 113                 if ((server->Hidden) || ((Utils->HideULines) && (server->IsULine())))
 114                 {
 115                         if (user->IsOper())
 116                         {
 117                                  ShowLinks(server, user, hops+1);
 118                         }
 119                 }
 120                 else
 121                 {
 122                         ShowLinks(server, user, hops+1);
 123                 }
 124         }
 125         /* Don't display the line if its a uline, hide ulines is on, and the user isnt an oper */
 126         if ((Utils->HideULines) && (Current->IsULine()) && (!user->IsOper()))
 127                 return;
 128         /* Or if the server is hidden and they're not an oper */
 129         else if ((Current->Hidden) && (!user->IsOper()))
 130                 return;
 131
 132         user->WriteNumeric(RPL_LINKS, "%s %s :%d %s",   Current->GetName().c_str(),
 133                         (Utils->FlatLinks && (!user->IsOper())) ? ServerInstance->Config->ServerName.c_str() : Parent.c_str(),
 134                         (Utils->FlatLinks && (!user->IsOper())) ? 0 : hops,
 135                         Current->GetDesc().c_str());
 136 }
 137
 138 void ModuleSpanningTree::HandleLinks(const std::vector<std::string>& parameters, User* user)
 139 {
 140         ShowLinks(Utils->TreeRoot,user,0);
 141         user->WriteNumeric(RPL_ENDOFLINKS, "* :End of /LINKS list.");
 142 }
 143
 144 std::string ModuleSpanningTree::TimeToStr(time_t secs)
 145 {
 146         time_t mins_up = secs / 60;
 147         time_t hours_up = mins_up / 60;
 148         time_t days_up = hours_up / 24;
 149         secs = secs % 60;
 150         mins_up = mins_up % 60;
 151         hours_up = hours_up % 24;
 152         return ((days_up ? (ConvToStr(days_up) + "d") : "")
 153                         + (hours_up ? (ConvToStr(hours_up) + "h") : "")
 154                         + (mins_up ? (ConvToStr(mins_up) + "m") : "")
 155                         + ConvToStr(secs) + "s");
 156 }
 157
 158 void ModuleSpanningTree::DoPingChecks(time_t curtime)
 159 {
 160         /*
 161          * Cancel remote burst mode on any servers which still have it enabled due to latency/lack of data.
 162          * This prevents lost REMOTECONNECT notices
 163          */
 164         long ts = ServerInstance->Time() * 1000 + (ServerInstance->Time_ns() / 1000000);
 165
 166 restart:
 167         for (server_hash::iterator i = Utils->serverlist.begin(); i != Utils->serverlist.end(); i++)
 168         {
 169                 TreeServer *s = i->second;
 170
 171                 // Skip myself
 172                 if (s->IsRoot())
 173                         continue;
 174
 175                 if (s->GetSocket()->GetLinkState() == DYING)
 176                 {
 177                         s->GetSocket()->Close();
 178                         goto restart;
 179                 }
 180
 181                 // Do not ping servers that are not fully connected yet!
 182                 // Servers which are connected to us have IsLocal() == true and if they're fully connected
 183                 // then Socket->LinkState == CONNECTED. Servers that are linked to another server are always fully connected.
 184                 if (s->IsLocal() && s->GetSocket()->GetLinkState() != CONNECTED)
 185                         continue;
 186
 187                 // Now do PING checks on all servers
 188                 // Only ping if this server needs one
 189                 if (curtime >= s->NextPingTime())
 190                 {
 191                         // And if they answered the last
 192                         if (s->AnsweredLastPing())
 193                         {
 194                                 // They did, send a ping to them
 195                                 s->SetNextPingTime(curtime + Utils->PingFreq);
 196                                 s->GetSocket()->WriteLine(":" + ServerInstance->Config->GetSID() + " PING " + s->GetID());
 197                                 s->LastPingMsec = ts;
 198                         }
 199                         else
 200                         {
 201                                 // They didn't answer the last ping, if they are locally connected, get rid of them.
 202                                 if (s->IsLocal())
 203                                 {
 204                                         TreeSocket* sock = s->GetSocket();
 205                                         sock->SendError("Ping timeout");
 206                                         sock->Close();
 207                                         goto restart;
 208                                 }
 209                         }
 210                 }
 211
 212                 // If warn on ping enabled and not warned and the difference is sufficient and they didn't answer the last ping...
 213                 if ((Utils->PingWarnTime) && (!s->Warned) && (curtime >= s->NextPingTime() - (Utils->PingFreq - Utils->PingWarnTime)) && (!s->AnsweredLastPing()))
 214                 {
 215                         /* The server hasnt responded, send a warning to opers */
 216                         ServerInstance->SNO->WriteToSnoMask('l',"Server \002%s\002 has not responded to PING for %d seconds, high latency.", s->GetName().c_str(), Utils->PingWarnTime);
 217                         s->Warned = true;
 218                 }
 219         }
 220 }
 221
 222 void ModuleSpanningTree::ConnectServer(Autoconnect* a, bool on_timer)
 223 {
 224         if (!a)
 225                 return;
 226         for(unsigned int j=0; j < a->servers.size(); j++)
 227         {
 228                 if (Utils->FindServer(a->servers[j]))
 229                 {
 230                         // found something in this block. Should the server fail,
 231                         // we want to start at the start of the list, not in the
 232                         // middle where we left off
 233                         a->position = -1;
 234                         return;
 235                 }
 236         }
 237         if (on_timer && a->position >= 0)
 238                 return;
 239         if (!on_timer && a->position < 0)
 240                 return;
 241
 242         a->position++;
 243         while (a->position < (int)a->servers.size())
 244         {
 245                 Link* x = Utils->FindLink(a->servers[a->position]);
 246                 if (x)
 247                 {
 248                         ServerInstance->SNO->WriteToSnoMask('l', "AUTOCONNECT: Auto-connecting server \002%s\002", x->Name.c_str());
 249                         ConnectServer(x, a);
 250                         return;
 251                 }
 252                 a->position++;
 253         }
 254         // Autoconnect chain has been fully iterated; start at the beginning on the
 255         // next AutoConnectServers run
 256         a->position = -1;
 257 }
 258
 259 void ModuleSpanningTree::ConnectServer(Link* x, Autoconnect* y)
 260 {
 261         bool ipvalid = true;
 262
 263         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name), rfc_case_insensitive_map))
 264         {
 265                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Not connecting to myself.");
 266                 return;
 267         }
 268
 269         DNS::QueryType start_type = DNS::QUERY_AAAA;
 270         if (strchr(x->IPAddr.c_str(),':'))
 271         {
 272                 in6_addr n;
 273                 if (inet_pton(AF_INET6, x->IPAddr.c_str(), &n) < 1)
 274                         ipvalid = false;
 275         }
 276         else
 277         {
 278                 in_addr n;
 279                 if (inet_aton(x->IPAddr.c_str(),&n) < 1)
 280                         ipvalid = false;
 281         }
 282
 283         /* Do we already have an IP? If so, no need to resolve it. */
 284         if (ipvalid)
 285         {
 286                 /* Gave a hook, but it wasnt one we know */
 287                 TreeSocket* newsocket = new TreeSocket(x, y, x->IPAddr);
 288                 if (newsocket->GetFd() > -1)
 289                 {
 290                         /* Handled automatically on success */
 291                 }
 292                 else
 293                 {
 294                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",
 295                                 x->Name.c_str(), newsocket->getError().c_str());
 296                         ServerInstance->GlobalCulls.AddItem(newsocket);
 297                 }
 298         }
 299         else if (!DNS)
 300         {
 301                 ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: Hostname given and m_dns.so is not loaded, unable to resolve.", x->Name.c_str());
 302         }
 303         else
 304         {
 305                 ServernameResolver* snr = new ServernameResolver(*DNS, x->IPAddr, x, start_type, y);
 306                 try
 307                 {
 308                         DNS->Process(snr);
 309                 }
 310                 catch (DNS::Exception& e)
 311                 {
 312                         delete snr;
 313                         ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",x->Name.c_str(), e.GetReason().c_str());
 314                         ConnectServer(y, false);
 315                 }
 316         }
 317 }
 318
 319 void ModuleSpanningTree::AutoConnectServers(time_t curtime)
 320 {
 321         for (std::vector<reference<Autoconnect> >::iterator i = Utils->AutoconnectBlocks.begin(); i < Utils->AutoconnectBlocks.end(); ++i)
 322         {
 323                 Autoconnect* x = *i;
 324                 if (curtime >= x->NextConnectTime)
 325                 {
 326                         x->NextConnectTime = curtime + x->Period;
 327                         ConnectServer(x, true);
 328                 }
 329         }
 330 }
 331
 332 void ModuleSpanningTree::DoConnectTimeout(time_t curtime)
 333 {
 334         std::map<TreeSocket*, std::pair<std::string, int> >::iterator i = Utils->timeoutlist.begin();
 335         while (i != Utils->timeoutlist.end())
 336         {
 337                 TreeSocket* s = i->first;
 338                 std::pair<std::string, int> p = i->second;
 339                 std::map<TreeSocket*, std::pair<std::string, int> >::iterator me = i;
 340                 i++;
 341                 if (s->GetLinkState() == DYING)
 342                 {
 343                         Utils->timeoutlist.erase(me);
 344                         s->Close();
 345                 }
 346                 else if (curtime > s->age + p.second)
 347                 {
 348                         ServerInstance->SNO->WriteToSnoMask('l',"CONNECT: Error connecting \002%s\002 (timeout of %d seconds)",p.first.c_str(),p.second);
 349                         Utils->timeoutlist.erase(me);
 350                         s->Close();
 351                 }
 352         }
 353 }
 354
 355 ModResult ModuleSpanningTree::HandleVersion(const std::vector<std::string>& parameters, User* user)
 356 {
 357         // we've already checked if pcnt > 0, so this is safe
 358         TreeServer* found = Utils->FindServerMask(parameters[0]);
 359         if (found)
 360         {
 361                 if (found == Utils->TreeRoot)
 362                 {
 363                         // Pass to default VERSION handler.
 364                         return MOD_RES_PASSTHRU;
 365                 }
 366                 std::string Version = found->GetVersion();
 367                 user->WriteNumeric(RPL_VERSION, ":%s", Version.c_str());
 368         }
 369         else
 370         {
 371                 user->WriteNumeric(ERR_NOSUCHSERVER, "%s :No such server", parameters[0].c_str());
 372         }
 373         return MOD_RES_DENY;
 374 }
 375
 376 /* This method will attempt to get a message to a remote user.
 377  */
 378 void ModuleSpanningTree::RemoteMessage(User* user, const char* format, ...)
 379 {
 380         std::string text;
 381         VAFORMAT(text, format, format);
 382
 383         if (IS_LOCAL(user))
 384                 user->WriteNotice(text);
 385         else
 386                 ServerInstance->PI->SendUserNotice(user, text);
 387 }
 388
 389 ModResult ModuleSpanningTree::HandleConnect(const std::vector<std::string>& parameters, User* user)
 390 {
 391         for (std::vector<reference<Link> >::iterator i = Utils->LinkBlocks.begin(); i < Utils->LinkBlocks.end(); i++)
 392         {
 393                 Link* x = *i;
 394                 if (InspIRCd::Match(x->Name.c_str(),parameters[0], rfc_case_insensitive_map))
 395                 {
 396                         if (InspIRCd::Match(ServerInstance->Config->ServerName, assign(x->Name), rfc_case_insensitive_map))
 397                         {
 398                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 is ME, not connecting.",x->Name.c_str());
 399                                 return MOD_RES_DENY;
 400                         }
 401
 402                         TreeServer* CheckDupe = Utils->FindServer(x->Name.c_str());
 403                         if (!CheckDupe)
 404                         {
 405                                 RemoteMessage(user, "*** CONNECT: Connecting to server: \002%s\002 (%s:%d)",x->Name.c_str(),(x->HiddenFromStats ? "<hidden>" : x->IPAddr.c_str()),x->Port);
 406                                 ConnectServer(x);
 407                                 return MOD_RES_DENY;
 408                         }
 409                         else
 410                         {
 411                                 RemoteMessage(user, "*** CONNECT: Server \002%s\002 already exists on the network and is connected via \002%s\002", x->Name.c_str(), CheckDupe->GetParent()->GetName().c_str());
 412                                 return MOD_RES_DENY;
 413                         }
 414                 }
 415         }
 416         RemoteMessage(user, "*** CONNECT: No server matching \002%s\002 could be found in the config file.",parameters[0].c_str());
 417         return MOD_RES_DENY;
 418 }
 419
 420 void ModuleSpanningTree::On005Numeric(std::map<std::string, std::string>& tokens)
 421 {
 422         tokens["MAP"];
 423 }
 424
 425 void ModuleSpanningTree::OnUserInvite(User* source,User* dest,Channel* channel, time_t expiry)
 426 {
 427         if (IS_LOCAL(source))
 428         {
 429                 CmdBuilder params(source, "INVITE");
 430                 params.push_back(dest->uuid);
 431                 params.push_back(channel->name);
 432                 params.push_int(channel->age);
 433                 params.push_back(ConvToStr(expiry));
 434                 params.Broadcast();
 435         }
 436 }
 437
 438 void ModuleSpanningTree::OnPostTopicChange(User* user, Channel* chan, const std::string &topic)
 439 {
 440         // Drop remote events on the floor.
 441         if (!IS_LOCAL(user))
 442                 return;
 443
 444         CommandFTopic::Builder(user, chan).Broadcast();
 445 }
 446
 447 void ModuleSpanningTree::OnUserMessage(User* user, void* dest, int target_type, const std::string& text, char status, const CUList& exempt_list, MessageType msgtype)
 448 {
 449         if (!IS_LOCAL(user))
 450                 return;
 451
 452         const char* message_type = (msgtype == MSG_PRIVMSG ? "PRIVMSG" : "NOTICE");
 453         if (target_type == TYPE_USER)
 454         {
 455                 User* d = (User*) dest;
 456                 if (!IS_LOCAL(d))
 457                 {
 458                         CmdBuilder params(user, message_type);
 459                         params.push_back(d->uuid);
 460                         params.push_last(text);
 461                         params.Unicast(d);
 462                 }
 463         }
 464         else if (target_type == TYPE_CHANNEL)
 465         {
 466                 Utils->SendChannelMessage(user->uuid, (Channel*)dest, text, status, exempt_list, message_type);
 467         }
 468         else if (target_type == TYPE_SERVER)
 469         {
 470                 char* target = (char*) dest;
 471                 CmdBuilder par(user, message_type);
 472                 par.push_back(target);
 473                 par.push_last(text);
 474                 par.Broadcast();
 475         }
 476 }
 477
 478 void ModuleSpanningTree::OnBackgroundTimer(time_t curtime)
 479 {
 480         AutoConnectServers(curtime);
 481         DoPingChecks(curtime);
 482         DoConnectTimeout(curtime);
 483 }
 484
 485 void ModuleSpanningTree::OnUserConnect(LocalUser* user)
 486 {
 487         if (user->quitting)
 488                 return;
 489
 490         CommandUID::Builder(user).Broadcast();
 491
 492         if (user->IsOper())
 493                 CommandOpertype::Builder(user).Broadcast();
 494
 495         for(Extensible::ExtensibleStore::const_iterator i = user->GetExtList().begin(); i != user->GetExtList().end(); i++)
 496         {
 497                 ExtensionItem* item = i->first;
 498                 std::string value = item->serialize(FORMAT_NETWORK, user, i->second);
 499                 if (!value.empty())
 500                         ServerInstance->PI->SendMetaData(user, item->name, value);
 501         }
 502
 503         Utils->TreeRoot->UserCount++;
 504 }
 505
 506 void ModuleSpanningTree::OnUserJoin(Membership* memb, bool sync, bool created_by_local, CUList& excepts)
 507 {
 508         // Only do this for local users
 509         if (!IS_LOCAL(memb->user))
 510                 return;
 511
 512         if (created_by_local)
 513         {
 514                 CmdBuilder params("FJOIN");
 515                 params.push_back(memb->chan->name);
 516                 params.push_back(ConvToStr(memb->chan->age));
 517                 params.push_raw(" +").push_raw(memb->chan->ChanModes(true));
 518                 params.push(memb->modes).push_raw(',').push_raw(memb->user->uuid);
 519                 params.Broadcast();
 520         }
 521         else
 522         {
 523                 CmdBuilder params(memb->user, "IJOIN");
 524                 params.push_back(memb->chan->name);
 525                 if (!memb->modes.empty())
 526                 {
 527                         params.push_back(ConvToStr(memb->chan->age));
 528                         params.push_back(memb->modes);
 529                 }
 530                 params.Broadcast();
 531         }
 532 }
 533
 534 void ModuleSpanningTree::OnChangeHost(User* user, const std::string &newhost)
 535 {
 536         if (user->registered != REG_ALL || !IS_LOCAL(user))
 537                 return;
 538
 539         CmdBuilder(user, "FHOST").push(newhost).Broadcast();
 540 }
 541
 542 void ModuleSpanningTree::OnChangeName(User* user, const std::string &gecos)
 543 {
 544         if (user->registered != REG_ALL || !IS_LOCAL(user))
 545                 return;
 546
 547         CmdBuilder(user, "FNAME").push_last(gecos).Broadcast();
 548 }
 549
 550 void ModuleSpanningTree::OnChangeIdent(User* user, const std::string &ident)
 551 {
 552         if ((user->registered != REG_ALL) || (!IS_LOCAL(user)))
 553                 return;
 554
 555         CmdBuilder(user, "FIDENT").push(ident).Broadcast();
 556 }
 557
 558 void ModuleSpanningTree::OnUserPart(Membership* memb, std::string &partmessage, CUList& excepts)
 559 {
 560         if (IS_LOCAL(memb->user))
 561         {
 562                 CmdBuilder params(memb->user, "PART");
 563                 params.push_back(memb->chan->name);
 564                 if (!partmessage.empty())
 565                         params.push_last(partmessage);
 566                 params.Broadcast();
 567         }
 568 }
 569
 570 void ModuleSpanningTree::OnUserQuit(User* user, const std::string &reason, const std::string &oper_message)
 571 {
 572         if (IS_LOCAL(user))
 573         {
 574                 if (oper_message != reason)
 575                         ServerInstance->PI->SendMetaData(user, "operquit", oper_message);
 576
 577                 CmdBuilder(user, "QUIT").push_last(reason).Broadcast();
 578         }
 579         else
 580         {
 581                 // Hide the message if one of the following is true:
 582                 // - User is being quit due to a netsplit and quietbursts is on
 583                 // - Server is a silent uline
 584                 bool hide = (((this->SplitInProgress) && (Utils->quiet_bursts)) || (user->server->IsSilentULine()));
 585                 if (!hide)
 586                 {
 587                         ServerInstance->SNO->WriteToSnoMask('Q', "Client exiting on server %s: %s (%s) [%s]",
 588                                 user->server->GetName().c_str(), user->GetFullRealHost().c_str(), user->GetIPString().c_str(), oper_message.c_str());
 589                 }
 590         }
 591
 592         // Regardless, We need to modify the user Counts..
 593         TreeServer::Get(user)->UserCount--;
 594 }
 595
 596 void ModuleSpanningTree::OnUserPostNick(User* user, const std::string &oldnick)
 597 {
 598         if (IS_LOCAL(user))
 599         {
 600                 // The nick TS is updated by the core, we don't do it
 601                 CmdBuilder params(user, "NICK");
 602                 params.push_back(user->nick);
 603                 params.push_back(ConvToStr(user->age));
 604                 params.Broadcast();
 605         }
 606         else if (!loopCall && user->nick == user->uuid)
 607         {
 608                 CmdBuilder params("SAVE");
 609                 params.push_back(user->uuid);
 610                 params.push_back(ConvToStr(user->age));
 611                 params.Broadcast();
 612         }
 613 }
 614
 615 void ModuleSpanningTree::OnUserKick(User* source, Membership* memb, const std::string &reason, CUList& excepts)
 616 {
 617         if ((!IS_LOCAL(source)) && (source != ServerInstance->FakeClient))
 618                 return;
 619
 620         CmdBuilder params(source, "KICK");
 621         params.push_back(memb->chan->name);
 622         params.push_back(memb->user->uuid);
 623         params.push_last(reason);
 624         params.Broadcast();
 625 }
 626
 627 void ModuleSpanningTree::OnPreRehash(User* user, const std::string &parameter)
 628 {
 629         if (loopCall)
 630                 return; // Don't generate a REHASH here if we're in the middle of processing a message that generated this one
 631
 632         ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "OnPreRehash called with param %s", parameter.c_str());
 633
 634         // Send out to other servers
 635         if (!parameter.empty() && parameter[0] != '-')
 636         {
 637                 CmdBuilder params((user ? user->uuid : ServerInstance->Config->GetSID()), "REHASH");
 638                 params.push_back(parameter);
 639                 params.Forward(user ? TreeServer::Get(user)->GetRoute() : NULL);
 640         }
 641 }
 642
 643 void ModuleSpanningTree::ReadConfig(ConfigStatus& status)
 644 {
 645         // Re-read config stuff
 646         try
 647         {
 648                 Utils->ReadConfiguration();
 649         }
 650         catch (ModuleException& e)
 651         {
 652                 // Refresh the IP cache anyway, so servers read before the error will be allowed to connect
 653                 Utils->RefreshIPCache();
 654                 // Always warn local opers with snomask +l, also warn globally (snomask +L) if the rehash was issued by a remote user
 655                 std::string msg = "Error in configuration: ";
 656                 msg.append(e.GetReason());
 657                 ServerInstance->SNO->WriteToSnoMask('l', msg);
 658                 if (status.srcuser && !IS_LOCAL(status.srcuser))
 659                         ServerInstance->PI->SendSNONotice('L', msg);
 660         }
 661 }
 662
 663 void ModuleSpanningTree::OnLoadModule(Module* mod)
 664 {
 665         std::string data;
 666         data.push_back('+');
 667         data.append(mod->ModuleSourceFile);
 668         Version v = mod->GetVersion();
 669         if (!v.link_data.empty())
 670         {
 671                 data.push_back('=');
 672                 data.append(v.link_data);
 673         }
 674         ServerInstance->PI->SendMetaData("modules", data);
 675 }
 676
 677 void ModuleSpanningTree::OnUnloadModule(Module* mod)
 678 {
 679         if (!Utils)
 680                 return;
 681         ServerInstance->PI->SendMetaData("modules", "-" + mod->ModuleSourceFile);
 682
 683         // Close all connections which use an IO hook provided by this module
 684         const TreeServer::ChildServers& list = Utils->TreeRoot->GetChildren();
 685         for (TreeServer::ChildServers::const_iterator i = list.begin(); i != list.end(); ++i)
 686         {
 687                 TreeSocket* sock = (*i)->GetSocket();
 688                 if (sock->GetIOHook() && sock->GetIOHook()->prov->creator == mod)
 689                 {
 690                         sock->SendError("SSL module unloaded");
 691                         sock->Close();
 692                 }
 693         }
 694
 695         for (SpanningTreeUtilities::TimeoutList::const_iterator i = Utils->timeoutlist.begin(); i != Utils->timeoutlist.end(); ++i)
 696         {
 697                 TreeSocket* sock = i->first;
 698                 if (sock->GetIOHook() && sock->GetIOHook()->prov->creator == mod)
 699                         sock->Close();
 700         }
 701 }
 702
 703 // note: the protocol does not allow direct umode +o except
 704 // via NICK with 8 params. sending OPERTYPE infers +o modechange
 705 // locally.
 706 void ModuleSpanningTree::OnOper(User* user, const std::string &opertype)
 707 {
 708         if (user->registered != REG_ALL || !IS_LOCAL(user))
 709                 return;
 710         CommandOpertype::Builder(user).Broadcast();
 711 }
 712
 713 void ModuleSpanningTree::OnAddLine(User* user, XLine *x)
 714 {
 715         if (!x->IsBurstable() || loopCall || (user && !IS_LOCAL(user)))
 716                 return;
 717
 718         if (!user)
 719                 user = ServerInstance->FakeClient;
 720
 721         CommandAddLine::Builder(x, user).Broadcast();
 722 }
 723
 724 void ModuleSpanningTree::OnDelLine(User* user, XLine *x)
 725 {
 726         if (!x->IsBurstable() || loopCall || (user && !IS_LOCAL(user)))
 727                 return;
 728
 729         if (!user)
 730                 user = ServerInstance->FakeClient;
 731
 732         CmdBuilder params(user, "DELLINE");
 733         params.push_back(x->type);
 734         params.push_back(x->Displayable());
 735         params.Broadcast();
 736 }
 737
 738 ModResult ModuleSpanningTree::OnSetAway(User* user, const std::string &awaymsg)
 739 {
 740         if (IS_LOCAL(user))
 741                 CommandAway::Builder(user, awaymsg).Broadcast();
 742
 743         return MOD_RES_PASSTHRU;
 744 }
 745
 746 CullResult ModuleSpanningTree::cull()
 747 {
 748         if (Utils)
 749                 Utils->cull();
 750         return this->Module::cull();
 751 }
 752
 753 ModuleSpanningTree::~ModuleSpanningTree()
 754 {
 755         delete ServerInstance->PI;
 756         ServerInstance->PI = new ProtocolInterface;
 757
 758         Server* newsrv = new Server(ServerInstance->Config->ServerName, ServerInstance->Config->ServerDesc);
 759         SetLocalUsersServer(newsrv);
 760
 761         /* This will also free the listeners */
 762         delete Utils;
 763
 764         delete commands;
 765 }
 766
 767 Version ModuleSpanningTree::GetVersion()
 768 {
 769         return Version("Allows servers to be linked", VF_VENDOR);
 770 }
 771
 772 /* It is IMPORTANT that m_spanningtree is the last module in the chain
 773  * so that any activity it sees is FINAL, e.g. we arent going to send out
 774  * a NICK message before m_cloaking has finished putting the +x on the user,
 775  * etc etc.
 776  * Therefore, we return PRIORITY_LAST to make sure we end up at the END of
 777  * the module call queue.
 778  */
 779 void ModuleSpanningTree::Prioritize()
 780 {
 781         ServerInstance->Modules->SetPriority(this, PRIORITY_LAST);
 782 }
 783
 784 MODULE_INIT(ModuleSpanningTree)